Log-loading device



A. G. TSIGRIS LOG LOADING DEVICE Aug. 25, 1925.

2770 arf" H1741; fad/'0J 7231/7/73' Aug. 25, 1925.

A. G. TSGRIS LOG LOADING DEVICE Filed Dec. 5l 1923 2 Sheets-Sheet 2 Patented Aug. 25, 1925.

Y "UNITED STATES ANASTASIOS G. TSIGRIS, OF OLNEY, OREGON.

LOG-LOADING DEVICE.

Application led December 5, 1923. Serial No. 678,638.

ToaZZ whom t may concer/n.'

Be it known that I, ANAs'rAsros G.Ts1e1us, a citizen of the United States, and a resident of the city of Olney, county of Clatsop, and State of Oregon, have invented a certain new and useful Improvement in Log- Loading Devices, of which the following is a specification.

This invention relates to log loading devices, and more particularly to devices comprising an upright spar pole from which a boom is suspended and adapted for horizontal movement about said spar pole, such log loading booms being in general usefor transferring logs from a log pile or landing to a railroad car for shipment.

One of the main objects of my invention is to provide a simple log loading device of the character mentioned, which will handle the logs quickly and which will hold the log steady while it is being lifted from the ground, thus minimizing the danger for the logging crew who are engaged in the work.

The further and particular object of my invention is to provide a boom which is adapted to operate with a single set of loading tongs, because such arrangement permits theloading to be done more quickly than where two sets of loading tongs are required, and besides such arrangement adapts my boom to be operated over a` loading ground which has a decided slope; that is, when twosets of tongs are used with a loading boom a more or less level loading ground is required. Heretofore, when a singleset of tongs was used in log loading devices the operation was very dangerous,'and a source of frequent injury to the loading crew, and damage to the equipment, because the tongs had to be centered exactly on the log and the log had to be guided by the loading crew from the time it was picked up until it was placed on the car and the tongs removed. The sudden application ofk power by the loading engineer, or thesudden stopping would cause the load to sway and thus tend to get. out of control.

Incidentally it is my particular object to improve log loading booms or apparatus of the type shown in the patent tor Andrew Opsal No. 1,279,746, dated Sept. 24, 1918, and the patent to Claud C. McLean No. 1,049,153, dated Dec. 4, 1917.

I attain the object of my invention by combining with the main boom of the log loading apparatus of the type last referred to, an auxiliary boom suspended below and,

at an angle with said main boom, the outer end of said auxiliary boom being hingingly fastened near the outer end of said main boom, the heel of said-auxiliary boom bearing against the spar pole of the apparatus, thereby to resist being lifted in the presence of a force holding the main boom against said spar pole, and the lower face of said auxiliary boom being provided with means intermediate its ends for engaging and hold ing one end of the log lifted by the apparatus.

rThe details of construction and operation of my device are hereinafter described and are illustrated in the accompanying draw` ings, in which: Y

Figure 1 isan elevation of log loading device embodying my improvement and also shows some ofthe rigging for operating the device.

Figure 2 is an elevation of my boom taken at right angles to the view at which Fig. 1 is taken and shows the boom swung to its opposite position, in this view parts have been broken away to show details of construction.

Figure 3 is a plan view of the main boom disengaged from the inclined boom or strut and shows its relative position with the spar tree.

Figure 4 is a plan view of the inclined boom or strut arranged on the spar tree and removed from the main boom; and Figure 5 is 'a sectional view taken on the line 5-5 of Fig. 4. My loading boom is adapted, to be used with a spar tree 1 which is provided with suitable and sufficient guy wires one of which is shown as 2, and onthis spar tree the main boom 3 is supported horizontally and is arranged for pivotal movement thereabout. The inner end' of the main boom 3 is supported by a cable 4 and the outer end is supported by va cable 5, both of the cables being fastened to the spar tree above the boom I provide an inclined boom 6 which is ivotally connected to the main boom as at by-means of two bifurcated fittings 8. The inclined boom is provided with two end caps 9 which have flattened extensions 9a which lit between the bifurcated portions of the fittings 8 and thus the inclined boom can be pivoted vertically relatively to the main boom. The degree of angularity is varied according to the necessity of the particular operation and the boom is held in predetermined position by means of a cable 10, the opposite end of which is connected to the main boom 3. The shortening or lengthening of this cable 10, of course, will regulate the spacing of the free ends of the two booms. The main boom is provided with suitable transverse members as 11, one of which as 11a is arranged so as to extend a slight distance back from the inner end 13a of the longitudinal members 13 so as to provide virtually a saddle around the spar tree 1 so as to prevent their disengagement one with the other. The inclined boom is made up with two longitudinal members 14 and with transverse members 15 and 16. The transverse member 15 is also arranged a slightdistance -away from the inner end 17 of the longitudinal members 14 so as to provide a saddle about the spar tree 1 andthe member 15 is preferably rectangular so that its inner face 15 makes alright angle with its upper face 151 and thus. because the boom 6 is inclined upwardly from the tree, this corner tends to dig into the spar tree and prevents the free end from being kicked upwardly if the impact of the inner ond of the log 18 should be so greatas to counteract the weight of this inclined boom. As shown in Fig. 4, the transverse member 16 .is preferably made up of a number of pieces abutting against each other so as to form a continuous surface of substantial length longitudinally of the boom, and as .shown in Fig. 5, these longitudinal members lie above the plane of the lower edges of the longitudinal members 14 and thus provide a pocket as 19 into which the inner end as 20 of the log 18 may rest.

I support a loading block 21 on the outer end of the boom and the loading line 22 is mounted thereover. I show a pair of loading tongs 22 on the outer end of the line 22 but it is to be understood that any type of log handling tools may be substituted for the commonV type of loading tongs. The loading line 22 is mounted over a block 23 which is supported on the spar tree above the inner end of the boom 3 andthe line 22 is taken in or paid out by the drum 24 of the loading engine 25. The booms 3 and 6 are connected and are both permitted pivotal movement about the spar tree and this pivotal movement is controlled in one direction by the cable 26 and in the opposite direction by the cable 27. The cable 26 is hauled in and paid out by the drum 28 on the loading engine 25 and passes over a block 29 supported on the spar tree 1 and extends thence over the block 30 which is fastened toy some convenient stump as 32, or support prefer-f the outer end of the boom and then preferably passes back to the stump 32 on which the block 3() is mounted. The line 27 is controlled by a counter weight 33 which is supported in the air by a block 34 which in turn is supported by the guy wire 2. This block is also arranged at a point so that the, cable 27, when exerting its pulling power, is substantially tangential to the arc described by the boom so as to attain maximum leverage. The counter weight 33 thus always tends to move the boom in one direction and is resisted by the tension of the cable 26 and this tension is controlled by the drum 28, as 1 previously described. The boom is thus swung in one direction by paying out the cable 26, which permits the counter weight Vto draw the boom in one direction, and is pulled in the opposite direction by winding up the cable and lifting this counter weightl to its uppermost position, as shown in Fig. 2. Fig. 1 shows the counter weight in its lowermost position, and the boom as positioned after being swung in the opposite"V direction. I preferablyv move the booms with the log from lifting position to loading position, by means of the counter weight 33, as I havefdiscovered that I can obtain` better control over the log and I thus move the boom back into lifting position by winding up the cable and lifting the counter weight.

The operation of my device is as follows:vr

and thus lies in the pocket 19 formed by the transverse member 16 and longitudinal members 14. The continued application of power will cause the end 2()a of the log to be lifted from the ground and the log will be held spaced from the ground as shown in Fig. 2, in which position the boom may be swung to the position shown in Fig. 1 where the log will be held superimposed above the railroad car 37. It is to be noted that the .degree of angularity shown, causes the log to be'lifted so that there is only a relatively short section of cable between the block 21 and the log, and thus because end 20 of the log 1S is held in the pocket 19, the end 20a of the log can only sway on an arc about the block 21. The distance between the block and the log, which is the radius of the swing, being short, causes the log to raise sharply after it leaves plumb position, and therefore, the log tends to remain relatively Stationary, due to its own weight.

Paying out of the cable 22 when the log is superimposed above the car causes the end am to be lowered, as shown in dotted lines in Fig. l, until it strikes the car or the logs already loaded, and the further paying out of the line causes the logs to be loaded as shown in the other dotted position. In this positio-n the tongs may be removed and the boom swung back to pick up another log.

The specific description of my device hereinbefore given is merely intended to define one practical inode of carrying my invention into effect.

I claim:

l. In a log loading apparatus of the character described comprising an upright spar-` pole and a main boom horizontally suspend ed therefrom for pivotal movement about the spar pole, `the combination with said main boom, of an auxiliary boom suspended below and at an angle therewith, the outer end of said auxiliary boom being hingingly fastened near the outer end of said main boom, the heel of said auxiliary boom bearing against said spanpole thereby to resist being lifted in thepresence of a force holding the main boom against said spar-pole, the lower face of said auxiliary boom being provided with means intermediate its ends for engaging and holding one end of the log lifted by the apparatus.

2. In a log loading apparatus of the character described comprising an upright sparpole and a main boom horizontally suspended therefrom for pivotal movement about the spar pole, the combination with saidmain boom of an auxiliary boom suspended below and at an angletherewith, the outer end of said auxiliary boom being hingingly fastened near the outer end of said main boom, the heel of said auxiliary boom being suspended from the heel of said main boom and bearing against said spar-pole thereby to resist being lifted in the presence of a force holding the main boom against said spar-pole, the lower face of said auxiliary boom being provided with means intermediate its ends for engaging and holding one end of the log lifted by the apparatus.

ANASTASIOS G. TSIGRIS. 

